CVE-2022-49229
ptp: unregister virtual clocks when unregistering physical clock.
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: ptp: unregister virtual clocks when unregistering physical clock. When unregistering a physical clock which has some virtual clocks, unregister the virtual clocks with it. This fixes the following oops, which can be triggered by unloading a driver providing a PTP clock when it has enabled virtual clocks: BUG: unable to handle page fault for address: ffffffffc04fc4d8 Oops: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:ptp_vclock_read+0x31/0xb0 Call Trace: timecounter_read+0xf/0x50 ptp_vclock_refresh+0x2c/0x50 ? ptp_clock_release+0x40/0x40 ptp_aux_kworker+0x17/0x30 kthread_worker_fn+0x9b/0x240 ? kthread_should_park+0x30/0x30 kthread+0xe2/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 – < b2dea2a696d09163da4cd33cb598ce1f73e86597
- affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 – < 9c796a57cbb5daf124a665689f0b2bc9262e0ced
- affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 – < c49eafe6249f844c26f9866886cc6719d81762df
- affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 – < bfcbb76b0f595ea9ede9f7a218086fef85242f10
- affected 5.14
- unaffected < 5.14
- unaffected 5.15.33 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (4)
- https://git.kernel.org/stable/c/b2dea2a696d09163da4cd33cb598ce1f73e86597 (opens in a new tab)
- https://git.kernel.org/stable/c/9c796a57cbb5daf124a665689f0b2bc9262e0ced (opens in a new tab)
- https://git.kernel.org/stable/c/c49eafe6249f844c26f9866886cc6719d81762df (opens in a new tab)
- https://git.kernel.org/stable/c/bfcbb76b0f595ea9ede9f7a218086fef85242f10 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49229)Record last updated .